1# SPDX-License-Identifier: GPL-2.0 2config PARISC 3 def_bool y 4 select ARCH_32BIT_OFF_T if !64BIT 5 select ARCH_MIGHT_HAVE_PC_PARPORT 6 select HAVE_IDE 7 select HAVE_OPROFILE 8 select HAVE_FUNCTION_TRACER 9 select HAVE_FUNCTION_GRAPH_TRACER 10 select HAVE_SYSCALL_TRACEPOINTS 11 select ARCH_WANT_FRAME_POINTERS 12 select ARCH_HAS_ELF_RANDOMIZE 13 select ARCH_HAS_STRICT_KERNEL_RWX 14 select ARCH_HAS_STRICT_MODULE_RWX 15 select ARCH_HAS_UBSAN_SANITIZE_ALL 16 select ARCH_NO_SG_CHAIN 17 select ARCH_SUPPORTS_MEMORY_FAILURE 18 select RTC_CLASS 19 select RTC_DRV_GENERIC 20 select INIT_ALL_POSSIBLE 21 select BUG 22 select BUILDTIME_EXTABLE_SORT 23 select HAVE_PCI 24 select HAVE_PERF_EVENTS 25 select HAVE_KERNEL_BZIP2 26 select HAVE_KERNEL_GZIP 27 select HAVE_KERNEL_LZ4 28 select HAVE_KERNEL_LZMA 29 select HAVE_KERNEL_LZO 30 select HAVE_KERNEL_XZ 31 select GENERIC_ATOMIC64 if !64BIT 32 select GENERIC_IRQ_PROBE 33 select GENERIC_PCI_IOMAP 34 select ARCH_HAVE_NMI_SAFE_CMPXCHG 35 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_CPU_DEVICES 37 select GENERIC_STRNCPY_FROM_USER 38 select SYSCTL_ARCH_UNALIGN_ALLOW 39 select SYSCTL_EXCEPTION_TRACE 40 select HAVE_MOD_ARCH_SPECIFIC 41 select VIRT_TO_BUS 42 select MODULES_USE_ELF_RELA 43 select CLONE_BACKWARDS 44 select TTY # Needed for pdc_cons.c 45 select HAVE_DEBUG_STACKOVERFLOW 46 select HAVE_ARCH_AUDITSYSCALL 47 select HAVE_ARCH_HASH 48 select HAVE_ARCH_JUMP_LABEL 49 select HAVE_ARCH_JUMP_LABEL_RELATIVE 50 select HAVE_ARCH_SECCOMP_FILTER 51 select HAVE_ARCH_TRACEHOOK 52 select HAVE_REGS_AND_STACK_ACCESS_API 53 select GENERIC_SCHED_CLOCK 54 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 55 select GENERIC_CLOCKEVENTS 56 select CPU_NO_EFFICIENT_FFS 57 select NEED_DMA_MAP_STATE 58 select NEED_SG_DMA_LENGTH 59 select HAVE_ARCH_KGDB 60 select HAVE_KPROBES 61 select HAVE_KRETPROBES 62 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 63 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 64 select HAVE_KPROBES_ON_FTRACE 65 select HAVE_DYNAMIC_FTRACE_WITH_REGS 66 select HAVE_COPY_THREAD_TLS 67 68 help 69 The PA-RISC microprocessor is designed by Hewlett-Packard and used 70 in many of their workstations & servers (HP9000 700 and 800 series, 71 and later HP3000 series). The PA-RISC Linux project home page is 72 at <http://www.parisc-linux.org/>. 73 74config CPU_BIG_ENDIAN 75 def_bool y 76 77config MMU 78 def_bool y 79 80config STACK_GROWSUP 81 def_bool y 82 83config GENERIC_LOCKBREAK 84 bool 85 default y 86 depends on SMP && PREEMPT 87 88config ARCH_HAS_ILOG2_U32 89 bool 90 default n 91 92config ARCH_HAS_ILOG2_U64 93 bool 94 default n 95 96config GENERIC_BUG 97 bool 98 default y 99 depends on BUG 100 101config GENERIC_HWEIGHT 102 bool 103 default y 104 105config GENERIC_CALIBRATE_DELAY 106 bool 107 default y 108 109config TIME_LOW_RES 110 bool 111 depends on SMP 112 default y 113 114# unless you want to implement ACPI on PA-RISC ... ;-) 115config PM 116 bool 117 118config STACKTRACE_SUPPORT 119 def_bool y 120 121config ISA_DMA_API 122 bool 123 124config ARCH_MAY_HAVE_PC_FDC 125 bool 126 depends on BROKEN 127 default y 128 129config PGTABLE_LEVELS 130 int 131 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 132 default 2 133 134config SYS_SUPPORTS_HUGETLBFS 135 def_bool y if PA20 136 137 138menu "Processor type and features" 139 140choice 141 prompt "Processor type" 142 default PA7000 143 144config PA7000 145 bool "PA7000/PA7100" 146 ---help--- 147 This is the processor type of your CPU. This information is 148 used for optimizing purposes. In order to compile a kernel 149 that can run on all 32-bit PA CPUs (albeit not optimally fast), 150 you can specify "PA7000" here. 151 152 Specifying "PA8000" here will allow you to select a 64-bit kernel 153 which is required on some machines. 154 155config PA7100LC 156 bool "PA7100LC" 157 help 158 Select this option for the PCX-L processor, as used in the 159 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 160 D200, D210, D300, D310 and E-class 161 162config PA7200 163 bool "PA7200" 164 help 165 Select this option for the PCX-T' processor, as used in the 166 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 167 K100, K200, K210, K220, K400, K410 and K420 168 169config PA7300LC 170 bool "PA7300LC" 171 help 172 Select this option for the PCX-L2 processor, as used in the 173 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 174 D220, D230, D320 and D330. 175 176config PA8X00 177 bool "PA8000 and up" 178 help 179 Select this option for PCX-U to PCX-W2 processors. 180 181endchoice 182 183# Define implied options from the CPU selection here 184 185config PA20 186 def_bool y 187 depends on PA8X00 188 189config PA11 190 def_bool y 191 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 192 select ARCH_HAS_SYNC_DMA_FOR_CPU 193 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 194 select DMA_NONCOHERENT_CACHE_SYNC 195 196config PREFETCH 197 def_bool y 198 depends on PA8X00 || PA7200 199 200config MLONGCALLS 201 bool "Enable the -mlong-calls compiler option for big kernels" 202 default y if !MODULES || UBSAN || FTRACE 203 default n 204 depends on PA8X00 205 help 206 If you configure the kernel to include many drivers built-in instead 207 as modules, the kernel executable may become too big, so that the 208 linker will not be able to resolve some long branches and fails to link 209 your vmlinux kernel. In that case enabling this option will help you 210 to overcome this limit by using the -mlong-calls compiler option. 211 212 Usually you want to say N here, unless you e.g. want to build 213 a kernel which includes all necessary drivers built-in and which can 214 be used for TFTP booting without the need to have an initrd ramdisk. 215 216 Enabling this option will probably slow down your kernel. 217 218config 64BIT 219 bool "64-bit kernel" 220 depends on PA8X00 221 help 222 Enable this if you want to support 64bit kernel on PA-RISC platform. 223 224 At the moment, only people willing to use more than 2GB of RAM, 225 or having a 64bit-only capable PA-RISC machine should say Y here. 226 227 Since there is no 64bit userland on PA-RISC, there is no point to 228 enable this option otherwise. The 64bit kernel is significantly bigger 229 and slower than the 32bit one. 230 231choice 232 prompt "Kernel page size" 233 default PARISC_PAGE_SIZE_4KB 234 235config PARISC_PAGE_SIZE_4KB 236 bool "4KB" 237 help 238 This lets you select the page size of the kernel. For best 239 performance, a page size of 16KB is recommended. For best 240 compatibility with 32bit applications, a page size of 4KB should be 241 selected (the vast majority of 32bit binaries work perfectly fine 242 with a larger page size). 243 244 4KB For best 32bit compatibility 245 16KB For best performance 246 64KB For best performance, might give more overhead. 247 248 If you don't know what to do, choose 4KB. 249 250config PARISC_PAGE_SIZE_16KB 251 bool "16KB" 252 depends on PA8X00 && BROKEN 253 254config PARISC_PAGE_SIZE_64KB 255 bool "64KB" 256 depends on PA8X00 && BROKEN 257 258endchoice 259 260config PARISC_SELF_EXTRACT 261 bool "Build kernel as self-extracting executable" 262 default y 263 help 264 Say Y if you want to build the parisc kernel as a kind of 265 self-extracting executable. 266 267 If you say N here, the kernel will be compressed with gzip 268 which can be loaded by the palo bootloader directly too. 269 270 If you don't know what to do here, say Y. 271 272config SMP 273 bool "Symmetric multi-processing support" 274 ---help--- 275 This enables support for systems with more than one CPU. If you have 276 a system with only one CPU, say N. If you have a system with more 277 than one CPU, say Y. 278 279 If you say N here, the kernel will run on uni- and multiprocessor 280 machines, but will use only one CPU of a multiprocessor machine. 281 On a uniprocessor machine, the kernel will run faster if you say N. 282 283 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 284 available at <http://www.tldp.org/docs.html#howto>. 285 286 If you don't know what to do here, say N. 287 288config PARISC_CPU_TOPOLOGY 289 bool "Support cpu topology definition" 290 depends on SMP 291 default y 292 help 293 Support PARISC cpu topology definition. 294 295config SCHED_MC 296 bool "Multi-core scheduler support" 297 depends on PARISC_CPU_TOPOLOGY && PA8X00 298 help 299 Multi-core scheduler support improves the CPU scheduler's decision 300 making when dealing with multi-core CPU chips at a cost of slightly 301 increased overhead in some places. If unsure say N here. 302 303config IRQSTACKS 304 bool "Use separate kernel stacks when processing interrupts" 305 default y 306 help 307 If you say Y here the kernel will use separate kernel stacks 308 for handling hard and soft interrupts. This can help avoid 309 overflowing the process kernel stacks. 310 311config HOTPLUG_CPU 312 bool 313 default y if SMP 314 315config ARCH_SELECT_MEMORY_MODEL 316 def_bool y 317 depends on 64BIT 318 319config ARCH_SPARSEMEM_ENABLE 320 def_bool y 321 depends on 64BIT 322 323config ARCH_FLATMEM_ENABLE 324 def_bool y 325 326config ARCH_SPARSEMEM_DEFAULT 327 def_bool y 328 depends on ARCH_SPARSEMEM_ENABLE 329 330source "kernel/Kconfig.hz" 331 332config COMPAT 333 def_bool y 334 depends on 64BIT 335 select COMPAT_BINFMT_ELF if BINFMT_ELF 336 337config SYSVIPC_COMPAT 338 def_bool y 339 depends on COMPAT && SYSVIPC 340 341config AUDIT_ARCH 342 def_bool y 343 344config NR_CPUS 345 int "Maximum number of CPUs (2-32)" 346 range 2 32 347 depends on SMP 348 default "4" 349 350config KEXEC 351 bool "Kexec system call" 352 select KEXEC_CORE 353 help 354 kexec is a system call that implements the ability to shutdown your 355 current kernel, and to start another kernel. It is like a reboot 356 but it is independent of the system firmware. And like a reboot 357 you can start any kernel with it, not just Linux. 358 359 It is an ongoing process to be certain the hardware in a machine 360 shutdown, so do not be surprised if this code does not 361 initially work for you. 362 363config KEXEC_FILE 364 bool "kexec file based system call" 365 select KEXEC_CORE 366 select KEXEC_ELF 367 help 368 This enables the kexec_file_load() System call. This is 369 file based and takes file descriptors as system call argument 370 for kernel and initramfs as opposed to list of segments as 371 accepted by previous system call. 372 373endmenu 374 375 376source "drivers/parisc/Kconfig" 377 378config SECCOMP 379 def_bool y 380 prompt "Enable seccomp to safely compute untrusted bytecode" 381 ---help--- 382 This kernel feature is useful for number crunching applications 383 that may need to compute untrusted bytecode during their 384 execution. By using pipes or other transports made available to 385 the process as file descriptors supporting the read/write 386 syscalls, it's possible to isolate those applications in 387 their own address space using seccomp. Once seccomp is 388 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 389 and the task is only allowed to execute a few safe syscalls 390 defined by each seccomp mode. 391 392 If unsure, say Y. Only embedded should say N here. 393